package com.ucpaas.monitor.util;

import java.io.BufferedReader;
import java.io.InputStreamReader;
import java.util.HashMap;
import java.util.Map;

import javax.servlet.http.HttpServletRequest;

import com.alibaba.fastjson.JSONObject;
import org.apache.commons.lang3.StringUtils;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;

public class BootUtils {

	private static final Logger LOGGER = LoggerFactory.getLogger(BootUtils.class);




	/**
	 * 获取提交的表单数据，多个值用,分割
	 * 
	 * @return
	 */
	public static Map<String, String> getFormData(HttpServletRequest request) {
		Map<String, String> formData = new HashMap<String, String>();
        String value;
		for (Map.Entry<String, String[]> map : request.getParameterMap().entrySet()) {
			value = StringUtils.join(map.getValue(), ",");
			if (StringUtils.isNotBlank(value)) {
				formData.put(map.getKey(), value.trim());
			}
		}

		LOGGER.info("\n\nformData-------------------------" + formData + "\n");
		return formData;
	}

	public static JSONObject getJSONParam(HttpServletRequest request){
		JSONObject jsonParam = null;
		try {
			// 获取输入流
			BufferedReader streamReader = new BufferedReader(new InputStreamReader(request.getInputStream(), "UTF-8"));

			// 写入数据到Stringbuilder
			StringBuilder sb = new StringBuilder();
			String line = null;
			while ((line = streamReader.readLine()) != null) {
				sb.append(line);
			}
			jsonParam = JSONObject.parseObject(sb.toString());
			// 直接将json信息打印出来
			LOGGER.info(jsonParam.toJSONString());
		} catch (Exception e) {
			e.printStackTrace();
		}
		return jsonParam;
	}

	/**
	 * 获取请求的源页面url
	 * 
	 * @return
	 */
	public static String getReferer(HttpServletRequest request) {
		return request.getHeader("referer");
	}

	/**
	 * 获取当前Web应用路径
	 * 
	 * @return
	 */
	public static String getContextPath(HttpServletRequest request) {
		return request.getContextPath();
	}

	/**
	 * 获取请求的url
	 * 
	 * @return
	 */
	public static String getRequestURI(HttpServletRequest request) {
		return request.getRequestURI();
	}

	/**
	 * 获取访问者的IP地址
	 * 
	 * @return
	 */
	public static String getClientIP(HttpServletRequest request) {
		String ip = request.getHeader("X-Real-IP");
		if (ip == null || ip.equals("")) {
			ip = request.getRemoteAddr();
		}
		return ip;
	}




	
	/**
     * 获取用户真实IP地址，不使用request.getRemoteAddr();的原因是有可能用户使用了代理软件方式避免真实IP地址,
     * 参考文章： http://developer.51cto.com/art/201111/305181.htm
     *
     * 可是，如果通过了多级反向代理的话，X-Forwarded-For的值并不止一个，而是一串IP值，究竟哪个才是真正的用户端的真实IP呢？
     * 答案是取X-Forwarded-For中第一个非unknown的有效IP字符串。
     *
     * 如：X-Forwarded-For：192.168.1.110, 192.168.1.120, 192.168.1.130,
     * 192.168.1.100
     *
     * 用户真实IP为： 192.168.1.110
     * @return String
     */
    public static String getIpAddress(HttpServletRequest request) {
        String ip = request.getHeader("x-forwarded-for");
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("WL-Proxy-Client-IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_CLIENT_IP");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getHeader("HTTP_X_FORWARDED_FOR");
        }
        if (ip == null || ip.length() == 0 || "unknown".equalsIgnoreCase(ip)) {
            ip = request.getRemoteAddr();
        }
        return ip;
    }

}
